双辊铸轧技术由于其亚快速凝固和短流程、高生产率的特点成为制备镁合金板材的理想选择。 但因其生产的板材会存在中心偏析情况，对材料性能产生影响，且在后续热处理中难以去除，是制约镁合金板材发展的主要障碍之一。 为减弱材料的中心偏析，通过实验探索中心偏析机理的方法效率较为低下，随着理论模型和计算机技术的发展，数值计算及数值模拟预测的方法被广泛应用，且该方法对温度场、浓度场、流场的预测准确性已被证实。 本文综述了凝固模型计算及有限元模拟在预测中心偏析中的应用，分析了中心偏析的形成机理及多种影响因素，最后对两种方法做出评价，并对其在中心偏析预测领域的发展方向进行展望。

Twin-roll casting technology is considered the ideal choice for producing magnesium alloy sheets because of itscharacteristics of subrapid solidification, short process flow, and high productivity. However, the inherent center segregationin the sheet material produced by this process poses a significant challenge, as it can negatively impact material propertiesand is difficult to eliminate during subsequent heat treatment processes, thus hindering the development of magnesium alloysheets. Traditional experimental exploration of center segregation mechanisms has proven to be inefficient. With theadvancement of theoretical models and computer technology, numerical calculation and simulation methods have beenwidely adopted to predict center segregation. These methods have demonstrated high accuracy in predicting temperaturefields, concentration fields, and flow fields. This paper reviews the application of solidification models and finite elementsimulations for predicting center segregation, comprehensively analysing the formation mechanisms and various influencingfactors. A critical evaluation of these two methods is provided, along with a prospective outlook on their futuredevelopment in the field of center segregation prediction